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BOSTON (TheStreet) -- The following mid-cap companies have market values between $500 million and $10 billion and receive "buy" ratings from our proprietary quantitative model, which considers more than 60 factors. The stocks are ordered by their potential to appreciate.

Church & Dwight(CHD) sells household products, including Arm & Hammer Baking Soda and Brillo Pads, worldwide.

The numbers: Second-quarter revenue increased 5% to $623 million as net income increased 27% to $58 million and earnings per share climbed 23% to 88 cents, restrained by a higher share count. The operating margin ascended from 14% to 16% and the net margin advanced past 9%. A quick ratio of 1.2 demonstrates ample liquidity and a debt-to-equity ratio of 0.5 indicates conservative leverage.

The stock: Church & Dwight is up 5% in 2009, underperforming major U.S. indices. The stock trades at an expensive price-to-earnings ratio of 19 and offers a dividend yield below 1%. The company's record of consistent earnings growth regardless of economic conditions makes it an attractive investment.

Strayer Education(STRA) is a for-profit post-secondary education company.

The numbers: Second-quarter net income climbed 29% to $28 million and earnings per share jumped 33% to $2 as revenue increased 29% to $126 million. The operating margin climbed from 34% to 36% and the net margin remained steady at 22%. Strayer has no debt or interest expenses. And a quick ratio of 1.6 indicates strong liquidity.

The stock: Strayer is flat in 2009, underperforming major U.S. indices. The stock trades at an expensive price-to-earnings ratio of 32 and offers a dividend yield below 1%. Strayer will capitalize on recessionary pressures as Americans seek to broaden their skills in order to appeal to employers.